export function countdown ({ instance }) {
  const originUnload =  instance.onUnload
  instance.onUnload = (rest) => {
    originUnload.call(this,rest)
    console.log(13123, rest)
  }
  const originLoad = instance.onLoad
  instance.onLoad = () => {
    // originLoad()s
    console.log('onLoad')
  }
}